Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Spatio-temporal patterns in the north-western Mediterranean from MERIS derived chlorophyll a concentration
Gordoa, A.; Illas, X.; Cruzado, A.; Velásquez, Z. (2008). Spatio-temporal patterns in the north-western Mediterranean from MERIS derived chlorophyll a concentration. Sci. Mar. (Barc.) 72(4): 757-767. http://dx.doi.org/10.3989/scimar.2008.72n4757
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Chlorophyll
    MED, Western Mediterranean
    Remote sensing
    Remote sensing
    Remote sensors > Remote detectors > Remote sensing
    Techniques > Detection > Sensing > Remote sensing
    Mediterranean Sea - Western Basin [Marine Regions]
    Marien/Kust
Author keywords
    north-western Mediterranean; chlorophyll a; remote sensing; MERIS
Auteurs  Top 
  • Gordoa, A.
  • Illas, X.
  • Cruzado, A.
  • Velásquez, Z.
Abstract
    We address the major surface signatures of chlorophyll a in the Catalan sea within the context of the dynamics of the north-western Mediterranean basin. Monthly composites from MERIS measurements and CHL products for Case 1 waters were analysed from June 2002 to June 2005. Composite images of variability were used to identify surface dynamics. The results showed that coastal and open sea waters were separated by a belt of low variability, a permanent oligotrophic belt that is noticeable with respect to the bloom conditions of the surrounding areas. The width of this Catalan Oligotrophic Belt (COB) located along the continental slope, varied between 17 and 30 km and became blurred in the southernmost area. The chlorophyll a temporal pattern over the shelf showed an almost steady increase from September to March. A similar behaviour but with lower concentrations was observed in oceanic waters. Both temporal patterns showed a disruption during January and/or February that coincided with the well known deep water formation event in the Gulf of Lions. In 2004, the convection was weaker and the offshore temporal trend was not disrupted; however, the opposite was observed in 2005. The spatial chlorophyll a distribution of oceanic waters presented a clear north-south decreasing trend, while the coastal distribution did not show any latitudinal patterns but rather peaks in the areas enriched by river runoff. The observed seasonality was similar to the one published from SeaWiFs data and slightly different from the seasonality shown by CZCS data. Nevertheless, we did not discard the possibility that some of the observed seasonal differences could be a true temporal shift in chlorophyll a production.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ.